
X458 L3 Service Manual
23
No display or display abnormality
NO
NO
YES
YES
NO
YES
YES
NO
Problem solve
Check if 13
th
PIN of J701 have signal
or not, check 8
th
digit cable status
No display or display
abnormality after power on
Check LCD
connector is OK or
not
Change LCD FPC
Change or re-solder
U101 MT6260
Check LCD if damage
or liquid flow out
Change LCD
Clean/re-solder
connector
Upgrade software
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Summary of Contents for X458
Page 13: ...X458 L3 Service Manual 13 All manuals and user guides at all guides com ...
Page 14: ...X458 L3 Service Manual 14 Output of SIM Card All manuals and user guides at all guides com ...
Page 17: ...X458 L3 Service Manual 17 Display interface All manuals and user guides at all guides com ...
Page 48: ...X458 L3 Service Manual 48 All manuals and user guides at all guides com ...